adriana16391 adriana16391

09-05-2021
Mathematics

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Please help, I will mark you brainiest, thank you!!

Please help I will mark you brainiest thank you class=

Respuesta :

Аноним Аноним

09-05-2021

Answer:

x = 20

Step-by-step explanation:

The small square at the vertex indicates a 90º angle

Therefor

x + (3x + 10) = 90

Combine like terms

4x + 10 = 90

Subtract 10 from both sides

4x = 80

Divide both sides by 4

x = 20

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